I began embroidering a rayon scarf. I did a test run and everything went fine. But when I switched threads and put the rayon scarf in, it all went south! Now my upper thread breaks and my bobbin thread is all I see on top. I have tried adjusting tension in both bobbin and top thread. I'm new at this, any suggestions would be appreciated:) FYI- using embroidex thread and size 11 needle.